Oil-pump.



E. V. RENO 6:]. A. C. BOIS.

OIL PUMP.

APPLICATION FILED FEB. 2, I914.

L lfifi film Patented M01213, 1915.

2 SHEETS-SHEET 1.

THEIR ATTORNEY E. \l. RENO 64 J. A. C. 8018.

OIL PUMP.

APPLICATION FILED FEB. 2. 1914.

2 SHEETS-SHEET 2.

WHWEEEES lNvEMToRs ATTORNEY EMILE VICTOR RENO AND JOSEPH ALFREDGHRYSOSTOME BOIS, 0F SOMIVIE, FRANCE.

OIL-PUMP.

Specification of Letters Patent.

Patented Apr, 13, 1915..

Applicationfiled February 2, 1914. Serial No. 816,022.

To all whom it may concern:

Be it known that we, EMILE VioToR RENO and JOSEPH ALFRED CHRYSOSTOME1301s, residing at 58 Rue St. Fuscien a Amiens, Somme, France, haveinvented a certain new and useful Oil-Pump, of which the followingis aspecification.

The present invention has for its object a pump for oil or other liquidor gaseous fluids, its cylinder being constituted by the extremity of arotary shaft which is perforated for this purpose. This shaft is provided with a recess, which, owing to its rotation, alternately comesopposite a suction orifice in communication with the oil reservoir and asecond or delivery orifice which conducts the oil to the member to belubricated. The piston that is displaced in the cylinder thusconstituted is driven by a cam keyed upon the extremity of the rotaryshaft in which the cylinder is formed. As a result of this arrangementthe delivery from the pump is automatically regulated in accordance withthe speed of rotation of the shaft.

Two embodiments of the invention are illustrated by way of example inthe accompanying drawing, in which:

Figure 1 is a longitudinal elevation partly in section of the pump atthe end of the suction period. Fig. 2 is a cross-section thereof throughthe suction and delivery orifices. Fig. 8 is an end elevation of thedriving cam. Fig. 4 is an end elevation. Fig. 5 is a longitudinalsection of the device at the moment at which the two orifices areclosed. Fig. 6 is a cross section, and Fig. 7 illustrates a modifiedconstruction.

The apparatus illustrated in Figs. 1 to 6 comprises the rotary shaft abored with a cylindrical hole 6 constituting the cylinder of the pumpand provided with an orifice 'c intended to place the interior of thecylinder 12 in communication with the orifices d and e for suction anddelivery respectively. The orifice may be connected with the oilreservoir by a tube which is also fixed to the socket f, while theorifice e conducts the oil to the member to be lubricated by theintermediary of a tube fixed to a socket g. Tn-

the interior of the cylinder 7) is arranged a piston it inside which isarranged a spiral spring 2' which causes this piston to bear constantlyagainst a lever 7' pivoted at is upon a fixed support Z integral with asleeve Z perforated with orifices d and e and in which the extremity ofthe shaft a rotates. The lever j 1s lntegral with a roller on runningupon a cam n fixed by any convenient means to the extremity of therotary shaft a; under the influence of the spring 2', this roller isconstantly held in contact with the cam 91..

Operation: When the shaft a rotates, the cam 01 which is fixed upon androtates with it, acts upon the roller m in conjunction with the spring ain such a manner as to impart to the piston h a reciprocating movementin the cylinder 1) in order to produce a suction period and a deliveryperiod; it is therefore only necessary to cause these periods tocorrespond alternately with the orifices cl and e by the intermediary ofthe orifice 0 formed in the end of the cylinder 6, which, as statedabove, is constituted by the shaft or. This pump can be utilized forcreating pressure in a chamber or crank case containing the drive forthe pump and into which the oil is delivered for distribution to themembers to be lubricated. When the pressure in this chamber, which actsupon the outer end of the piston, becomes greater than the force of thespring 2', the piston is immobilized. In this manner the pressure in thedelivery is regulated.

In the modified construction illustrated in Fig. 7 the pump comprises nospring all the control members being connected one with the other. Inthis case the cam it carries a collar 0 which is connected with thepivoted lever j by means of a rod 17 in which is engaged a ball joint 9carried by the short arm of the lever j pivoted at k. The end of thelong arm of the lever y is engaged in a groove 1 cut in the piston insuch a manner as to obtain automatic action of the pump.

The pump that has been described is not only applicable to thedistribution of lubricating oil to one or more given points served bythe same pump, but also for all liquid or gaseous fluids.

The novel form of pump that has just been described renders unnecessarythe employment of valves which are uncertain in their operation at highspeeds, thereby pre venting the pump from acting. It facilitates thearrangement or the location of the oil reservoir because it is notnecessary to fetch or flood this pump in order to insure a supply fromit.

Claim:

In combination, a member having a bore therein and a pair of orificescommunicating With the bore; a rotary shaft in said bore 5 and havinglongitudinally in its end a hole having a lateral orifice adapted toregister With either one of the orifices of said member; a'piston insaid hole; an eccentric on said shaft; and an elbow lever adapted toengage and be oscillated by said eccentric 10 and to engage andreciprocate said piston.

In testimony whereof We aflix our signatures in presence of twoWitnesses.

EMILE VICTOR RENO. JOSEPH ALFRED CHRYSOS'LOME BOIS. Vitnesses:

MAURICE PIoARn, HANSON C. COXE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

